آبستنی

Also known as pregnancy

alt=Drawing of a sagittal cross-section of a fetus in the pregnant parent's amniotic cavity.|thumb|upright|Drawing of a fetus in utero. Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals (the embryo develops within the parent). It is typical for mammals, but also occurs for some non-mammals. Mammals during pregnancy can have one or more gestations at the same time, for example in a multiple birth.